相關wascreatedremainsone的文學知識

問題詳情：HowtheGrandCanyon(大峽谷)wascreatedremainsoneofthegeology’sgreatestmysteries.SomeevidencesuggeststhattheprocesswasagradualoneinwhichtheColoradoRiver(whichrunsthroughthecanyon)slowlycutdeepera...